CVE-2021-47919

medium

Description

Simple CMS 2.1 contains a non-persistent cross-site scripting vulnerability in the preview.php file's id parameter. Attackers can inject malicious script code through a GET request to execute arbitrary scripts and potentially hijack user sessions or perform phishing attacks.

References

https://www.vulnerability-lab.com/get_content.php?id=2301

https://www.vulncheck.com/advisories/simple-cms-non-persistent-cross-site-scripting-via-preview-parameter

https://simplephpscripts.com/simple-cms-php

Details

Source: Mitre, NVD

Published: 2026-02-01

Updated: 2026-02-01

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 5.1

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Severity: Medium